Sectional linear wave shape generator for scan speed regulation circuit

Application Number: 00108728
Application Date: 2000.05.26
Publication Number: 1275857
Publication Date: 2000.12.06
Priority Information: 1999/5/26 US 09/320334
International: H04N3/32;H04N5/57
Applicant(s) Name: Thomson Licensing
Inventor(s) Name: R. W. Miller
Patent Agency Code: 72001
Patent Agent: luo peng
Abstract A video display deflection circuit includes a source of a periodic, first signal that varies in accordance with a position of an electron beam on a screen of a cathode ray tube. A limiter is responsive to the first signal for generating a second signal having a limited, piece-wise linearized first portion, when the first signal is outside a range of values. The second signal has a second portion that varies, when the first signal varies within the range of values. A modulator is responsive to the second signal and to a video signal for generating a modulated correction signal coupled to an auxiliary deflection winding to produce, in accordance therewith, scan velocity modulated deflection of the electron beam.